Muz.069

Morning people.... I'm trying to find some information or a decent wiring diagram for an old XT600... I'm trying to get it running for a friend of mine but having little luck, Wondering if anyone has had a similar problem.....? I've been through the carbi and cleaned up and stopped from flooding... Charged the battery and checked over, all seems ok... The problem I seem to have is lack of spark, when winding it over it gives one good spark then nothing, as it doesn't have a kick start I can't tell if it will spark without the starter, Other than taking it out onto the road and pushing it what should I check or what may be a common fault I haven't thought of ..? Thanks Muz